I posted this question on Apple's official forums and could not get any responses. The Airport Extreme has been a joy to setup and use but have made no progress on setting up a shared disk. I just picked up an early 2009 Airport Extreme and wanted to set up the disk through the USB port. When in Airport Utility, I can see the drive connected under the "Disks" tab--but this is as far as I can get setting it up. None of my PCs can see this drive at this stage--but the Airport Extreme obviously knows there's a drive connected. What is the next step? ANY help appreciated--have been at a total standstill with this.